A/959CS Multi-Turn Absolute Encoder
- Manufacturer: ELCIS Encoder
- Category: Encoder, Absolute Encoder, Multi-turn Absolute Encoder, SENSORS
The ELCIS 959CS (A/959CS) is a 59 mm diameter, 15 mm diameter, F7 hollow shaft, and integrated elastic coupling SSI absolute multi-turn encoder. It offers up to 30 bits in 16384 turns and includes an RS422/RS485 line driver. Designed for general industrial use, it features coupling tolerances of ±0.1 mm axial, ±0.2 mm radial, and ±1° angular, radial/axial loads of 40 and 110 N, standard IP64 or IP66 sealed protection, resistance to 30 G of shock and 10 G of vibration, and operating temperatures from -40 to +85 °C (with cable: -5…+70 °C).
The A/959CS is a multi-turn absolute encoder with optical readout via an IR photodiode array. It allows selection of 4096, 8192, 16384, 32768, or 65536 steps per revolution and 4096 or 16384 revolutions, with a maximum resolution of 30 bits at 16384 revolutions. It transmits position via an SSI serial interface (RS422 line driver) with a clock frequency of 100 kHz to 1 MHz, in Gray code or binary code, and is available in preset (S1) and preset push-button (S4, with radial output only) variants.
Manufactured with a Ø59 mm aluminum body and a Ø15 mm F7 hollow stainless steel shaft (optional Ø8, Ø10, Ø12 or other diameters available upon request), it supports radial loads of 40 N and axial loads of 110 N. It features standard IP64 or sealed IP66 protection, withstands impacts of 30 G and vibrations of 10 G, and operates within a temperature range of -40 to +85 °C (with cable: -5 to +70 °C).
- Maximum resolution of 30 bit in 16384 turns.
- Hollow shaft with integrated elastic coupling: compensates for axial misalignments of ±0.1 mm, radials of ±0.2 mm and angular ±1°.
- Serial interface SSI with line driver RS422 and watch 100 kHz a 1 MHz.
- Variants with preset function (S1) or with a preset button (S4, (radial output only).
Technical Frequently Asked Questions
What misalignments does the A/959CS elastic coupling allow?
The built-in elastic coupling allows a maximum compensation of ±0.1 mm axial, ±0.2 mm radial and ±1° angular.
What resolutions and lap options can be configured?
It allows you to choose 4096, 8192, 16384, 32768 or 65536 steps per revolution and 4096 or 16384 revolutions, with a maximum resolution of 30 bits at 16384 revolutions.
What functions do the SSI interface options (SL, S1, and S4) offer?
The SL is the standard SSI interface. The S1 is the same as the SL, but with a preset function. The S4 is the same as the SL, but with a preset button, and is only available with a radial output.
Properties
| Feature | Specification |
|---|---|
| Mechanics | |
| Housing | Aluminum (options available upon request) |
| Weight | 300 g |
| Axis | F7 Hole: Standard Ø15 mm; Ø8, Ø10, Ø12 or others upon request |
| Elastic coupling | Axial ±0.1 mm · radial ±0.2 mm · angular ±1° |
| max radial/axial load. | 40 / 110 N |
| Electric | |
| Shaft/outlet protection | IP64 shaft (IP66 sealed) · IP65 outlet |
| Food / Consumption | 10–30 V DC · 1 W (SL) / 1.5 W (S1) |
| LSB pitch frequency | 800 kHz |
| Exit codes | Gray, Binary |
| Division accuracy | ±½ LSB (<13 bit) ±2 LSB (13–16 bit) |
| Max resolution. | 30 bit / 16384 laps |
| Interface / Output | SSI (SL, S1, S4) Line driver RS422 / RS485 |
| Protection and environment | |
| max. continuous RPM | 6000 standard · 3000 sealed (intermittent: +30 %) |
| Impact/vibration resistance | 30 G (11 ms) 10 G (10–1000 Hz) |
| Operating/storage temperature | -40 … +85 °C (with wired output: -5…+70 °C) |
| Reference | Configuration |
|---|---|
| A/959CS-12-12-15-G-SL-0-PRLA959CS121215GSL0PRL | 4096 steps/rev. · revolutions: 4096 · standard Ø15 mm shaft · Gray · SSI · 12-pin radial connector · IP65 |
| Other combinations of resolution, power supply, electronics and connection are available upon request: please contact us and we will confirm the exact reference. | |
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